Java: What can and what can't be serialized?

Question

If the Serializable interface is just a Marker-Interface that is used for passing some-sort of meta-data about classes in java - I\'m a bit confused:

After reading t

Answer 1

When you are talking about NotSerializableException it is throw when you want to serialize an object, which has not been marked as Serializable - that's all, although when you extend non serializable class, and add Serializable interface it is perfectly fine.

There is no data that can't be serialized.